Subharmonics generation based on synchronization of self-pulsation and optomechanical oscillation in a monolithic silicon cavity

We studied the coexistence of optomechanical oscillation and self-pulsation in a monolithic silicon cavity. By mapping laser-cavity detuning and power, the optomechanical-to-self-pulsation transitions are observed with rich nonlinear dynamics, e.g. chaotic, mixing and synchronized regimes.